<template>
  <div class="cart">
    <h4>全部商品</h4>
    <div class="cart-main">
      <div class="cart-th">
        <div class="cart-th1">全部</div>
        <div class="cart-th2">商品</div>
        <div class="cart-th3">单价（元）</div>
        <div class="cart-th4">数量</div>
        <div class="cart-th5">小计（元）</div>
        <div class="cart-th6">操作</div>
      </div>
      <div class="cart-body">
        <ul class="cart-list" v-for="cartInfo in cartInfoList" :key="cartInfo.id">
          <li class="cart-list-con1">
            <input type="checkbox" 
            name="chk_list" 
            @click="changeSkuSel(cartInfo)"
            :checked="cartInfo.isChecked == 1">
          </li>
          <li class="cart-list-con2">
            <img :src="cartInfo.imgUrl">
            <div class="item-msg">{{cartInfo.skuName}}</div>
          </li>
          <li class="cart-list-con4">
            <span class="price">{{cartInfo.skuPrice}}.00</span>
          </li>
          <li class="cart-list-con5">
            <a class="mins"
              :disabled="cartInfo.skuNum == 1"
              @click="changeSkuNum(cartInfo, 'cream', -1)">
              -
            </a>

            <input autocomplete="off" 
              type="text" minnum="1" 
              :value="cartInfo.skuNum"
              @change="changeSkuNum(cartInfo, 'c', $event.target.value * 1)"
              class="itxt">

            <a @click="changeSkuNum(cartInfo, 'cream', 1)" 
              class="plus">
              +
            </a>

          </li>
          <li class="cart-list-con6">
            <span class="sum">{{cartInfo.skuPrice * cartInfo.skuNum}}</span>
          </li>
          <li class="cart-list-con7">
            <a @click="delSku(cartInfo)"
            class="sindelet">
              删除
            </a>
            <br>
            <a href="#none">移到收藏</a>
          </li>
        </ul>
      </div>
    </div>
    <div class="cart-tool">
      <div class="select-all">
        <input class="chooseAll" 
        type="checkbox" 
        :checked="isAll" 
        @click="changeAllSkuSel($event.target.checked)">
          <span>全选</span>
      </div>
      <div class="option">
        <a @click="delAllSelSku" >删除选中的商品</a>
        <a href="#none">移到我的关注</a>
        <a href="#none">清除下柜商品</a>
      </div>
      <div class="money-box">
        <div class="chosed">已选择
          <span>{{selSkuNum}}</span>件商品</div>
        <div class="sumprice">
          <em>总价（不含运费） ：</em>
          <i class="summoney">{{this.sumPrice}}</i>
        </div>
        <div class="sumbtn">
          <router-link class="sum-btn" to="/trade">结算</router-link>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import throttle from 'lodash/throttle';
import { mapGetters} from 'vuex'
  export default {
    name: 'ShopCart',
    mounted() {
      this.getData();
    },
    computed: {
      ...mapGetters('shopCart', ['cartInfoList']),
      sumPrice() {
        let resPrice = 0;
        this.cartInfoList.forEach(it => {
          resPrice += it.skuNum * it.skuPrice;
        });
        return resPrice;
      },
      selSkuNum() {
        let resNum = 0;
        this.cartInfoList.forEach(it => {
          if (it.isChecked == 1) resNum++;
        });
        return resNum;
      },
      //全选
      isAll() {
        return this.cartInfoList.every(it => it.isChecked == 1)
      }
    },
    methods: {
      //获取数据
      getData() {
        this.$store.dispatch('shopCart/getCartList');
      },
      // 改变商品数量
      changeSkuNum: throttle(function (skuInfo,type, changeNum) {
        let params = {skuId:skuInfo.skuId, skuNum:0};
        if (type == 'cream') {
          if (skuInfo.skuNum != 1 || changeNum != -1) params.skuNum = changeNum;
        }else  {
          if(!isNaN(changeNum) && changeNum > 0 ) params.skuNum = parseInt(changeNum) - skuInfo.skuNum;
        }
        this.$store.dispatch('shopCart/getChangeShopCart', params);
        //更新数据
        this.getData();
      }, 500),
      //改变商品选中状态
      changeSkuSel({skuId, isChecked}) {
        isChecked = isChecked == 1 ? 0 : 1;
        this.$store.dispatch('shopCart/changeSkuSel', {skuId, isChecked});
        // 重新获取数据
        this.getData();
      },
      // 删除某个商品
      delSku({skuId}) {
        this.$store.dispatch('shopCart/delSku', skuId);
        //更新页面
        this.getData();
      },
      // 全选
      changeAllSkuSel(isChecked) {
        isChecked = isChecked ? 1 : 0;
        this.$store.dispatch('shopCart/getChangeAllSkuSel', isChecked);
        this.getData();
      },
      // 删除所有选中商品
      delAllSelSku() {
        this.$store.dispatch('shopCart/delAllSelSku');
        // 更新页面
        this.getData();
      }
    }
  }
</script>

<style lang="less" scoped>
  .cart {
    width: 1200px;
    margin: 0 auto;

    h4 {
      margin: 9px 0;
      font-size: 14px;
      line-height: 21px;
    }

    .cart-main {
      .cart-th {
        background: #f5f5f5;
        border: 1px solid #ddd;
        padding: 10px;
        overflow: hidden;

        &>div {
          float: left;
        }

        .cart-th1 {
          width: 25%;

          input {
            vertical-align: middle;
          }

          span {
            vertical-align: middle;
          }
        }

        .cart-th2 {
          width: 25%;
        }

        .cart-th3,
        .cart-th4,
        .cart-th5,
        .cart-th6 {
          width: 12.5%;

        }
      }

      .cart-body {
        margin: 15px 0;
        border: 1px solid #ddd;

        .cart-list {
          padding: 10px;
          border-bottom: 1px solid #ddd;
          overflow: hidden;

          &>li {
            float: left;
          }

          .cart-list-con1 {
            width: 15%;
          }

          .cart-list-con2 {
            width: 35%;

            img {
              width: 82px;
              height: 82px;
              float: left;
            }

            .item-msg {
              float: left;
              width: 150px;
              margin: 0 10px;
              line-height: 18px;
            }
          }

          .cart-list-con4 {
            width: 10%;
          }

          .cart-list-con5 {
            width: 17%;

            .mins {
              border: 1px solid #ddd;
              border-right: 0;
              float: left;
              color: #666;
              width: 6px;
              text-align: center;
              padding: 8px;
            }

            input {
              border: 1px solid #ddd;
              width: 40px;
              height: 33px;
              float: left;
              text-align: center;
              font-size: 14px;
            }

            .plus {
              border: 1px solid #ddd;
              border-left: 0;
              float: left;
              color: #666;
              width: 6px;
              text-align: center;
              padding: 8px;
            }
          }

          .cart-list-con6 {
            width: 10%;

            .sum {
              font-size: 16px;
            }
          }

          .cart-list-con7 {
            width: 13%;

            a {
              color: #666;
            }
          }
        }
      }
    }

    .cart-tool {
      overflow: hidden;
      border: 1px solid #ddd;

      .select-all {
        padding: 10px;
        overflow: hidden;
        float: left;

        span {
          vertical-align: middle;
        }

        input {
          vertical-align: middle;
        }
      }

      .option {
        padding: 10px;
        overflow: hidden;
        float: left;

        a {
          float: left;
          padding: 0 10px;
          color: #666;
        }
      }

      .money-box {
        float: right;

        .chosed {
          line-height: 26px;
          float: left;
          padding: 0 10px;
        }

        .sumprice {
          width: 200px;
          line-height: 22px;
          float: left;
          padding: 0 10px;

          .summoney {
            color: #c81623;
            font-size: 16px;
          }
        }

        .sumbtn {
          float: right;

          a {
            display: block;
            position: relative;
            width: 96px;
            height: 52px;
            line-height: 52px;
            color: #fff;
            text-align: center;
            font-size: 18px;
            font-family: "Microsoft YaHei";
            background: #e1251b;
            overflow: hidden;
          }
        }
      }
    }
  }
</style>